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97505-89-0

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97505-89-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97505-89-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,5,0 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97505-89:
(7*9)+(6*7)+(5*5)+(4*0)+(3*5)+(2*8)+(1*9)=170
170 % 10 = 0
So 97505-89-0 is a valid CAS Registry Number.

97505-89-0Relevant articles and documents

ASYMMETRIC DEPROTONATION OF PROCHIRAL KETONES USING CHIRAL LITHIUM AMIDE BASES

Cain, Christian M.,Cousins, Richard P. C.,Coumbarides, Greg,Simpkins, Nigel S.

, p. 523 - 544 (2007/10/02)

A number of chiral secondary amines have been prepared and used as precursors to the corresponding chiral lithium amide bases.Treatment of either cis-2,6-dimethylcyclohexanone or 4-tert-butylcyclohexanone with a chiral lithium amide, followed by electrophilic quench, gives chiral products in up to 88 percent enantiomeric excess.The results with 4-tert-butylcyclohexanone are in disagreement with an earlier literature report, giving products of lower enantiomeric excess but higher optical rotation.

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